Low carbon economic dispatching model for a virtual power plant connected to carbon capture system considering green certificates-carbon trading mechanism

Abstract

To ensure the sustainable operation of virtual power plants (VPP), a low-carbon economic dispatch model for carbon capture virtual power plants (CCVPP) that takes into account the emission reduction effect of green certificates is developed in the context of the energy policy of green certificate trading (GCT) and carbon emission trading (CET). First, the implementation principles of CET and GCT are analyzed. The operation model of a CCVPP under the synergy of the two mechanisms is also described. Second, a low-carbon economic optimization model that takes into account constraints such as electrical energy balance and equipment output is constructed. Net profit and CO2 emissions are used as the optimization objectives to better balance economic and environmental benefits. Finally, different scenarios are created for comparative analysis based on whether the CCVPP is involved in the proposed trading mechanism. The optimal net profit of the system is calculated to be 492,838.26 CNY and the carbon emissions offset by green certificates are 228.22 t. The calculation results show that the proposed model can better balance the economic and low-carbon aspects of the system and ensure the consumption of green energy.